package Demo4;

class Counter{
    public int count=0;
public void add(){
    synchronized (this){
        count++;
    }
}
}


public class Main2 {
    public static void main(String[] args) throws InterruptedException {
        Counter counter=new Counter();
        Thread t1=new Thread(()->{
            for (int i = 0; i <50000 ; i++) {
                counter.add();
            }
        });
        Thread t2=new Thread(()->{
            for (int i = 0; i <50000 ; i++) {
                counter.add();
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println(counter.count);
    }
}
